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Feature

Battery has long-lasting 600mAh capacity
Voltage: 3.7V, Type: Button Top
Charger is compatible with the following IMR/Li-ion/LiFePO4 batteries: 18650, 18500, 18490, 18350, 17670, 17500, 16340, 14500, 10440
Overvoltage, overcurrent, short circuit, and reverse battery protection
Input: AC 100-240V 50/60Hz 0.2A, DC 8-12V 1A, Output: 3V 0.5A, 4.2V 0.5A

Description

Works great in flashlights and other devices that can take 10440 batteries. Includes built-in PCB.
Note: These are NOT AAA batteries. These batteries runs at 3.7 volts. Please make sure that your device is designed to operate using 10440 batteries.

Specifications:
Capacity: 600mAh
Nominal Voltage: 3.7V
Dimensions: 46.10.2mm Length, 10.30.2mm Circumference
Operating Discharge Temperature: -20 to 60 Degrees Celsius
Standard Charge: 0.2C CC/CV to 4.2V, current 0.01C cut-off
Cycle Life: 300 cycles
Weight Per Battery: 8g

Charger Information:

The Demonfire D1 battery charger is perfect for charging 3.7V IMR, Lithium-Ion, or LiFePO4 batteries. Indicator lights on the charger show when batteries are fully charged. The compact size is great for traveling or on-the-go charging.

Specifications:

Compatible with the following IMR/Li-ion/LiFePO4 batteries: 18650, 18500, 18490, 18350, 17670, 17500, 16340, 14500, 10440
4.2V for lithium batteries and 3.0V for LiFePO4 batteries
DC input port size: 3.5mm x 1.35mm
Input: AC 100-240V 50/60Hz 0.2A, DC 8-12V 1A
Output: 3V 0.5A, 4.2V 0.5A

Package Includes:

4 Brand New Demonfire 10440 600Mah Button-Top Batteries
2 Quad Battery Cases (holds up to 8 batteries total)
1 Brand New Demonfire D1 Battery Charger